Former US treasury secretary Larry Summers is stepping down from the board at OpenAI, a week after a tranche of emails between him and late convicted sex offender Jeffrey Epstein was released. Summers said in a statement to the BBC that he was "grateful for the opportunity to have served, excited about the potential of the company, and look forward to following their progress". Summers, who was also once the president of Harvard University, said on Monday that he would be stepping back from public commitments over his ties to Epstein.